signed by president clinton, it defines marriage as for federal law purposes as only the legal union of one man and one woman. now, the practical effect of that is that in the nine states that now grant or soon will grant same-sex couples the legal right to get married, those couples are legally married under state law, but the federal government doesn't recognize their marriage, which means that they can't get survivors' benefits, they don't get tax benefits, they don't get social security benefits. about 1,000 benefits in all that are the result of this federal law that's being challenged by several cases. and that's why you say there are at least eight of them, all of which say that the federal law is unconstitutional discrimination. and the challengers also say there's never been another case where congress says, well, we're not going to recognize a marriage that the state defines as legal. so i think that's the most likely thing that will happen today. but one of the cases that the justices will be talking about is the challenge to california's proposition 8. that's the voter-ap